CINXE.COM
Just a moment...
<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '9133a2028f3040aa',cH: 'DE5EghRNBBUn8Nge0FN.IUgeT3BMkiMSWrptKbwKg6I-1739772820-1.2.1.1-5gS7T3196RBJDEKtZZR8hTXInbHtnKZYhGOuaifSuY0rKarBw2nb7Qw6G2gvz.Lq',cUPMDTk: "\/search?q=blocking%20probability&__cf_chl_tk=wup96OtwD15vrfRbJmwvrB.EJvcaHABHflPNGXhDdlc-1739772820-1.0.1.1-REAE572J.kEE62EjrRKBegBiCZFkW6GdBZZjj_.go2A",cFPWv: 'b',cITimeS: '1739772820',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/search?q=blocking%20probability&__cf_chl_f_tk=wup96OtwD15vrfRbJmwvrB.EJvcaHABHflPNGXhDdlc-1739772820-1.0.1.1-REAE572J.kEE62EjrRKBegBiCZFkW6GdBZZjj_.go2A",md: "H4YzQB6pzp8ygaG90bQnrdUBif0eIREHZvSppBhiWec-1739772820-1.2.1.1-AinMZvdrbO4ClFrpjyK.s6dxcN9rNUS8ZJJSoNBQ4Wjp5t7E7xQNUucYj_JiXaqcoYlAraz2g0DI0LKX0KkSx6TAwfFm5lSknA87zrHKBLWpZk_EoUIsL89A69KghLn.QQx11F_l5kxruo_QVPjeO6gxyEmLlwdYxTZHDmKOOy6cfXYJD5tdHlTzrHxnVjEH8qRZo0g0h8fzeAL4JzRQu7Bcg20Xa7RechktcZBYYrpgIR.riSQXpXjrMUDyLY2DoXZeSCIpK0VUXvkYuIN8pa1wXKSIVqDwBYzYI0i7ij9Wp_PYMoExFtei.oiqrzAgd1PlsrizlQzge.hTkzbfI8VG_FCScZNcLRR66jMaG9nfmM2DJaIHFTIZH6Iwcw2OKwVoLhD5JkR7QcXa9X99Zun7aIpV8E1lGgO6xKZvqAW1uZcVGq4P8hOGNyBEPTPf5zEzlqsEpbJEUwtJOxj4iVlaxo_2gwrrdazmGTwbrEj7wRGhurJ_o0lH_uY.hIraf3LEctkcFw21cmxX2SI8ygCZBcsHBe82vWzJl4814Emc_WXnsOWa78rxMnFnb4KxDbJq2nNme_Xv2Cizc2wj3ReVBe2hhQJF10yi.Z0OTom7w.5Z.kGtj7Vzdt53n.6xzFZnFQB29mfICJsIgSVmFGGXRZS33638fZrZX5fcdGgLvN9yNqELUwPuWXJazDnQyx6DDQyf9b_v3pD5wEL9FHlKwCjNykEXr6n8V5MwKBtNyBaNGoDEoigLA8S5sAQVkErITat7xiuc6d2yEUeNyV_DaRMDdsblTj3exyTvAkyuI8jDsauI99wVUbQ6oy4piRa8Zz6EUCvPwbwWuLUinNW3lDvD_saudbNZ._7dO6OAN2b.qKTg7kfeBV2doG6.ad2efd.KaGFg2WWrMsF0fjB8dTDcIV43qDryHCO6UYZA1xZIK4dQR_KISq4pJUdQ0WNptUREUXNHnv_Tk7exbcWld9jViHQ.o5CdVMHlRT.CvRvB1Ii8nABz3Aig6HawGkxS37Nv0JpEjc7CHGZccLYQdiKvR.eBNgagFoJZ0HQOssekEQ2GwLurpSdeo02q2d_8Xd74eA3rSRFYRwuEmXq.t3jgVJ6JDujxcr6WEKhNOLOrww_9GVBBWStDIgN6YOeQo8qyuLqaQUbU5_InpzALlaJmKOWYcOBpnOziK5jNmWaGcuozbFZEW5PfBo3Vyrs5YRiJ7od7wI.HKno2xcIdiMzqXkDf6Y_45W3wvV.vvMDIzEd_aVMQnkZWUxRg4rU4Y2YDtacw7gL_Zta8FmDNApA2HM3WICd7i.E_0bWNe_S6PwrBe4Y.dJhbKhty7f3dPQkM64yMLXC5Wm19x9vUqVd4Y3wuGx2m07fbPjv8VGE0.3PVrn9zXrNwCfvQJb.SLAg4Npr9HRchGvccJ6_3GfRrM1MiSHmyY7BDYPdfuyat11p98HhfEMcayrR0g8Cv84WPOZTzv0zvh99EYrC3qGdCQqWA2NTBxNkwSTiegd09eHJg85FkAvSVlMiwhTvDMTRw60eLyZbwVYU0ig_ZujcfOnZdYL1bZQYO_NhL49fA9O3li1hnmWSJydGNaw2qGIdC48CEUsIJxqHsdZHq55yXaJVdFjuZ6lYSYSQKMkeLc9v1z19.wjUqWu7OnX7traUgRB64p5Rm2nIxTQMGK1J3_QNfI7vNk0u.qVhOXW4MqjiFgZ_OxSYSkFcXb9i59Wg_EmQgSGKFONFzpxr2YCna.6jE1ExYAe1UHJrMteMMCMuZMa2f383RdRwEuZVA.dpzng1xFYefk8upe0lN8lEWcA2CTJdh2RP1jpjijjEJtpWOM0n1PVwcgimuW2_HcevzSAybaJAFcg0aiWZ5drYcL0eWCnT9X7u4w8j1kq4UD1H2h.YS8XhjhEWe1lLZwu5cj0GzJEAuE4eMmw",mdrd: "ksi33IjOq9Dkdr2JKDrCjfE2GoU8LHm5pavp5JjMQ_c-1739772820-1.2.1.1-mzz7jeSQ5JYXuToN_Bpd62mo8gpmhJLMXMpKDwBK9oNPUUM95wEBWxyA7QhylRssgYK0WrnhQsfSzUrt1TDyGDuL6blusFjtw_4dBraoXUzlIYXkXVHOm8Uru_YKm2rYFEVWdb.bHHuwXvxrwDOjKK7EGZLjOKrpegM9HwUWKdMB1WGlp4cR7.wh.mfxKPBpTSaRSdtvIs.UiGhtHcZ5o6S3IIyTcPfTzOhxNLwkHwfl903ruIGA50.QdZ9iGZs7VtdIgVn7YQWMynQpbZbX27zrjbIxcj.2hnfUapHrli0xqJMitiEBbZoThNBO.ImJQviysypikIEpdONSOJqUoNT0ZENvya2C1eafOCIQY.aN0u2.pttrUK.TAHt1wkRHlF1ffh65KRXws8UkC_j7x7fOSznLF.L6PiYDxkXLs.uUHLasox.okqBInyVysn.PWpN.1Ny1JfmNd0b6dGYVPBoOD4SPeH5PP9qZN2u3yCNooEflv6xjXst0VFNeQ2VgWI.e9t75SYclcWK_Vvcpy3WoHKRrULfrmDLB.lg6rY1t6tbANKFOD6LW.xw4F22t2Q39vzUChibWtr14AL5QgKl8c4rKO3kBgHAkwzsmACCQHR.YFoNf20y90EUtydN9bbFf27DyHnoyoUZPd5wOpxdwrG.6No2dhILuEY8SCvth_Yfw3ISSbZdBiiv1MRfsZGnFUQoUNmemZlFXzDfln4h6epNzHzfHbJLhvZcMCQu9NxW1BTYZL.2sGlzdX6Uo2Kt6mEpWLk7MovbVrZb0cj8WJhlLhDw5hs68yxy0698UVn0Xguqy3og7AOF05lDPYYJeTOxp_JXzWQJl663ers0mD4RuE1TXGvTu7i8O9BbAlhHham5eA9JfOj0oa4EzJXm4vWr1jYeqGf.GVdZeGHcdudAbuVrbTZAK4foK9.Vs_rgMsVCcJyK4M876D2hbWwQa7mla7ufWQlvQKurhPlNhfkj5PVNrPxMM9jxuOpWHEa_c.7rs7wQ2j_v2mehC90xx_ebXGdbr_HQFB6kO2LWCOrl96PVhOvGZGRrtg7zJjU0fauXGFb4._gpZ45CGhmtbUh226Bl2weIyl39lhS8NBaq6iQO_Zy7WfF3K5kC3dIZ6RLWOaZ4ivtmoNu.2E9go7NFFRpL_T0Hbh9tYNolCIsPeJuhzn_llFxgNK07G7.Y_L7BOCaDX3fZ88jZqNkoflzfZS3E5NmEqicaDgRgh2tSVr0kosG1AM56l5ke5cBDNuytyeaq1JEnQtCKStZ1LXv5YwnVnkkIpKnOCg2fxhwKdKSOfxlrVFu6fmPmuwerCjKhSrsMiOzcGJHGWHv6UwTQ9uOTmSiASyJ4TkxRMGFdsCjbfRcig5O3UkRk5V8yfNs4BztuJ6kTsSLPX_HU3j3_NjN0lTpvAp4Dhr1PT3hwXXRMxMWe_qyOw80Uc23ExzwbRt1aB4395br5UpQcTJTGh3D76j9.EMFj85MPJqK.tHV9xGw186OHyMTIvfdT3ek.65p5F1DNoWOayK5._xSDjCSpIiv0TmnUQylrqq4dzRnttWCM_WYdacVdWbpw4r5WVhq02Gwy6tUe5HP7WVk9ld.2eJ8id2fUnr8_MxJ1cWvIE7FRLZvnjZu7rj4llb_NUWCFOKYQupj_yjsSXBcpC8ny89.acScH._PuF58Rz4xV973bMkBaZSLgszspoM0e9tJSzDShkdYtAxDPWCR88OVCsRDwSNRcoe4plqyKqvQzjm_zJcKcsyfLwHAriwOAfX7Uf73K1T5BFU8EMB.FVSJxia2kYxyecURitkJ0cm4egg1NazmbTjt_yH4ewgFiRdUbXT8rZL380bqbr3N6lTlzUvxUSPg3Iv45aCnqbykz_KfTLz6xGs77InUHGwl.5_D5Bd5Rx3olJRVFPTh24ia4ES1IAB_l6qfoCFd3IC4D1BRsPq35JAoKa1sWFsLHVJDHYEB18..sd1t9Wda5rHwqlkG569I2_wg"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9133a2028f3040aa';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/search?q=blocking%20probability&__cf_chl_rt_tk=wup96OtwD15vrfRbJmwvrB.EJvcaHABHflPNGXhDdlc-1739772820-1.0.1.1-REAE572J.kEE62EjrRKBegBiCZFkW6GdBZZjj_.go2A" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>